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| CPP Program To Know Correct Days |
#include
#include
#include
main()
{
clrscr();
int d,m,y,year,month,day,i,n;
cout<<"\nEnter how many times you want to run this program : ";
cin>>n;
for(i=1;i<=n;i++)
{
cout<<"\nEnter the date : ";
cin>>d>>m>>y;
if( d>31 || m>12 || (y<1900 || y>=2000) )
{
cout<<"INVALID INPUT";
getch();
exit(0);
}
year = y-1900;
year = year/4;
year = year+y-1900;
switch(m)
{
case 1:
case 10:
month = 1;
break;
case 2:
case 3:
case 11:
month = 4;
break;
case 7:
case 4:
month = 0;
break;
case 5:
month = 2;
break;
case 6:
month = 5;
break;
case 8:
month = 3;
break;
case 9:
case 12:
month = 6;
break;
}
year = year+month;
year = year+d;
day = year%7;
switch(day)
{
case 0:
cout<<"\nDay is SATURDAY";
break;
case 1:
cout<<"\nDay is SUNDAY";
break;
case 2:
cout<<"\nDay is MONDAY";
break;
case 3:
cout<<"\nDay is TUESDAY";
break;
case 4:
cout<<"\nDay is WEDNESDAY";
break;
case 5:
cout<<"\nDay is THURSDAY";
break;
case 6:
cout<<"\nDay is FRIDAY";
break;
}
}
getch();
return 0;
}
Sample Output :
Enter how many times you want to run this program : 2
Enter the date <dd:mm:yyyy> : 1 8 1983
Day is MONDAY
Enter the date <dd:mm:yyyy> : 25 12 1985
Day is WEDNESDAY
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